Method of and apparatus for forging car-wheels and similar metal bodies.



E. E. SLIGK. METHOD or AND APPARATUS FOR FORGING CAB. WHEELS AND SIMILAR HBTAL nonms.

' rruonmu FILED. APR. 5, 1910. M 25, 1914 a ennui-51mm 1.

l ww m w C Q J W \N 9W /6 z AV 9 0 Q :1 Mo 00 i 0 .3 .NN M

Q |l||1| #0 0 O G Q Q Q W Q Q Q 3 s Q wW d WK 'E..B.- SLICK. Q Y METLIQD OF AND APPARATUS FOR FORGING GAR WHEELS AND SIMILARMETAL'BODIBS.

' I r ATPPLIOATIQNIPILED Arms, 19x0. 1,108,524. 4

III

5 Patented Ai1g25,1914.

, E. E. SLICK. METHOD 011" AND APPARATu FOR FORGING GAR WHEELS AND SIMILAR METAL'BODIES.

, Q APPLICATION-,FILED. APR. 5, 1 910- 3 SHEETS-SHEET 3' I Patented Aug. 25, 1914;

%%W' ZMMM it i To all whom it may concern Be it known that I, EDWIN E. Simon, of Pittsburgh, in the county of Allegheny and Stateof Pennsylvania, have invented a new and usefulllfethod of .and Apparatus for Forging Car-l vheels and Similar Metal Bodies, of which the following is a full, clear, and exact description, reference being had to the accom an in drawin s for-min part of this specification.

My invention relates'to the manufacture of wheels from metal blanks by roller by which thesurface speeds of rotation of the forming rolls, blank and supporting die are equalized, slippagebetween the sur aces v of the blpnk in contact with the. supporting" die and forming rolls is prevented and the flow of the metal in the blank is facilitated; and to provide improved apparatus for roller forging the blanks which is adapted for use incarrying out my improved method and is arrangedto permit the blank and the forming faces of thesupporting die and roll or rolls to rotate at substantially the'same surface speed, and in this way prevent slippage between the blank and the contacting forming faces of the forging rolls and the supporting dieand facilitate the flow of the metal displaced in the forging operation.

To that end the invention consists in si multaneouslysubjecting the blank to roller forging pressure at a plurality of-radially separated oints and upon difi'erentannular portions of the blank.

lteferring to thedrawings, Figure 1 is a plan partly in section, showing apparatus constructed in accordance -with*' my inven tion and adeptedfor use/in carrying out my l "1 fit. l

M l et lllll lll gnnwru 1E. SLICK, or rrr'rssueeri. PENNSYLVANIA.

FORGING CAB-WHEELS AND SIMILAR METAL BUDIE$.

Specification of Letters Patent. jPg tgm-tgfl A g 25, 191% 7 Application filed April 5, 1910. serial No. 553,600.

improved method also forming part of this lnveution. Fig. 2 is a sectional end elevation on the line llll of Fig. 1. Fig. 3 is a side elevation partly broken away of the apparatus shown in Figs. 1 and 2.

In the drawings, 2 designates the base of the apparatus having ways or slides 23 on which the carrier t is mounted so as to be reciprocated by means of the hydraulic cylinder 5 and plunger 6. A pull-back cylinder 7 and plunger 8 is employed to retract the carrier after the rollers and carrier have been advanced in the operation of forming a wheel, the carrier 4 being connected to the cylinder 7 by means of the tie rods 9.

10 is a supporting die upon which the blank is held duringthe forging operation, this die preferably being removably secured on the flange 11 of a die shaft 12. The shaft 12 is mounted in the bearings 13 and 14, so

as to rotate therein, the bearing 13 being a thrust hearing so as to transmit end thrust put upon the shaft 'lQ by the'forging opera tion to the shaft carrier 4. The outer end of the shaft 12 is provided with 'a wabbler '15 which is used to connect the shaft 12 with a suitable driving motor (not shown) in the usual and well-known manner.

Mounted on the carrier 4 so as to be adjustable axially or longitudinally is a pluralitv of. overhung or stub forming rolls 1G,

17, 1 8. The shafts forming part of these rolls are provided with roller thrust bean ings 16, 17 and 18 and the bearings and their rollers are adjusted and are held in adjusted position on-the carrier by means of the adjusting screws 19. "As shown, the supporting die 10 is provided with a pin 20 on which the blanks are centered during the forming operation and by means of which a hole is formed in the blank which is finally enlarged by machiningto form the bore of the finished wheel. The bearings for the shaft 12 and the cylinder 5 are connected to- ;gether by means of-the tie rods 22, which serve to securely hold the bearing and shaft in position during the forging operations.

In carrying out my improved method by means of the apparatus shown and described, a blank,' after being heated. is placed upon the supporting die 10 and th carrier 4 is advanced by means of the cylinder 5 and plunger 6 until one or more of the forming rolls 16, 17, 18, are in contact with the blank. The supporting die 10 is then rotated and the shape of the blank isgradually changed by advancing the carrier 4 toward the die 10, while rotating the die and blank. The metal in the blank is displaced and is gradually forced into the cavities in the supporting die and its upper face'is worked'upon at points which are se arated both annu larly and radially, in t is way preventing slippage of the contacting surfaces of the rolls on the surface of the blank and dragging of one annular portion of the metal with regard to the other annular portion thereof, as is the case when the forming roll extends entirely across the half diameter of the blank being rotated, in this way greatly facilitating the flow of the metal being displaced.

In carrying out the applicants method forging pressure is simultaneously applied to angularly and annularly' separated portions of the blank. The rollers of the applicants construction operate on different portions of the blank and in the beginning of the operation the roller 18 which forms the hub, begins to displace the metal; then the roller 17 which forms the web takes up the work and this work is completed by the roller '16. These actions are simultaneous during a part of the work and are successive in the sense that each die overlaps so as to traverse a part of the path of the preceding die.

As shown in the drawings, the roll 16 is arranged to form the flange of the wheel, the roll 17 part of the flange and adjoining web portion of the Wheel, 'while the roll 18 is arranged to form the inner portion of the web and the hub portion of the blank.

In making wheels of different diameters, the die 10 is changed and the rolls are adjusted toward and away from the point of intersection of the axes of these rolls by means of the adjusting screws 19 and in some cases, when found desirable or necessary, the rolls are changed and rolls having different contours and sizes are substituted in making wheels of various shapes and sizes. p

The advantages of my invention will be apparent to those skilled in the art. The apparatus is simple and is easily kept in repair. By the arrangement of the roller thrust bearings shown, the power lost by friction is reduced to a minimum. By ad justing the rollers toward and away from each other endwise, the apparatusis made more flexible and capable of a larger variety of work. By, rolling different annular portions of the blanks at separated angular points on the blank I am. enabled to flow the metal in a manner not heretofore known, in which the displacement of the metal is facilitated, slippage between the contacting faces of the blanks with the rolls and the die is prevented and the life of the formin rolls and dies very largely increased whl e the power required to perform the forging operations is greatly reduced.

Modifications in the construction and arrangement of the parts may be made-without departing from my invention as defin in the claims. I claim p 1. Apparatus forforging metal comprising a sup-porting die, a plurality of rotary forming rolls and means for causinga relative approach of the die and rolls, said rolls respectively co-acting with the die at angu-' la-rly and annularlyseparated points on the die in forging the metal; substantially as described. i

2. Apparatus for forging metal comprising a supporting die, a plurality of rotary forming rolls and means for causing a relative approach of the die and rolls, said rolls simultaneously co-acting with the die at angularly and annularly separated point-s on the die in forging the metal; substantially as described.

3. Apparatus for forging metal comprising a supporting die, a plurality of rotar forming rolls arranged to form each a di 'ferent annular portion of the blank, and

means for causin a relatiye approach of the die and rolls, said rolls being arranged to 00- act with the die and forge annularly sepatially as described.

5. The method of'forging metal consisting in rotatably supporting the metal blank and applying roller forging pressure to angularly and annularly separated portions of the blank; substantially as described. 6.- The method of forging metal consisting in holding the metal blank upon a supporting die and simultaneously applying roller forging pressure to angularly and annularly separated portions of the blank; substantially as described.

'7. The method of forging metal consisting in holding the metal blank upon a supporting die and applying roller forging pressure to angularly and annularly sepa-f' rated'portions of the blank while said rollers are permitted to rotate; substantially as described.

ESQ-The mechod of forging metal c0nsist- In testimony whereof, Ilmve hereunto set 311g in holdirig' the metal blank upon a supmy hand. porting-diem1d simultaneously applying a EDWIN E SLICK roller forging pressure to a'ngularly and annuim-ly separated portions of the blank Witnesses:

While said rollers are permitted to rotate; G. NEILL, eubstamially as described. 1-1 M. CQRWIN. 

